Phoenix Audio: DRS-Q4M mk2 - Mono Class A Microphone Pre-Amplifier/DI/EQ

The DRS-Q4M mk2 is a 4 Band Gyratory-based Eq with 11 selectable frequencies, and Mic, Line, and DI inputs. We know you will be as pleased with it’s sonic qualities as we are. The DRS-Q4M mk2 has the advantages of more than 25 years experience in audio engineering, today’s component and manufacturing technology, but still retaining “that sound” uniquely achievable through Class A design. Phoenix Audio is dedicated to the development of Class A discrete technology used within high build-quality equipment.

The DRS-Q4M mk2 uses our well proven and loved Class A output stage (DSOP-2) coupled with our custom wound output transformer, but also has our latest breakthrough in transformerless Class A, Discrete, truly-balanced Mic Input Technology which gives a “valve-like” sound. It also incorporates our high input impedance DI circuitry.  

The Gyrator EQ circuit was designed around 40 years ago and was originally designed to emulate the characteristics of a coil or inductor EQ circuit without the issues that they can cause, the result is that our EQ circuit found in the DRS-Q4M mk2 is a very powerful but musical EQ perfect for sculpting or crafting vocals, drums or instruments etc whilst still being able to be used on mix bus duties.  


1U half rack space unit: With 240V/110V mains voltage input selector switch  
Class A (DSOP-2) Output specs. Frequency response: 20Hz to 20kHz +- 0.5dB, 
Maximum Output Level: +26dBu @ 1kHz 
Noise: -90dB @ 20Hz to 20kHz. 
Output connections: XLR and TSR 1/4″ Jack on rear 
Phoenix Audio’s unique Class A, transformer-less, True balanced Mic input stage. 
Phoenix Audio’s custom wound output transformer. 
Microphone/Line input: XLR on Rear Panel 
DI inputs: ¼” TSR Jack on Front Panel 
Individual Earth Lift: Push-button Switches 
Gain Range (Mic input): -30 to -70 in 5dB steps With 10dB more available on the fader. 
Gain reduction: -30dB push-button Mic/Line switch (Mic input) 
High Input Impedance DI: Mono 1/4″ Jack on front panel (no FETs) 
Gain Meter: LED Metering. (Green = 0dB, Yellow = +8dB, corresponding to “4” and “6” on a PPM Meter). 
Phantom Power: Switchable phantom on Push-button Switch 
High Pass Filter: Roll-off starts at 120Hz @ 12dB per Octave. 
Phase Reverse: on Push-button Switch 
Frequency Response Mic Input Stage: -0.4dB @ 40Hz, -0.3dB @ 25kHz 
Frequency Response: DI Input Stage: -0.3dB @ 40Hz, – 0.5dB @ 25kHz 
Typical Headroom: +24dB on Mic-Pre stage 
Gyratory-based EQ Frequency Centres: (4 Bands) High – 15K, 10K, Hi Mid – 6K, 3K, 1K6, Low Mid – 800Hz, 400Hz, 200Hz, Low – 130Hz, 80Hz, 40Hz 
EQ Cut/Boost Levels: 16dB Cut/Boost Per Band 
EQ is stepped/dentented to 21 positions for easy recall settings 
DI Stage gain: Maximum of 20dB 
All units are wired with PTFE silver military grade cable 

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